The Transaction Recovery Service is designed to gracefully handle
transaction recovery after a crash. BEA recommends that you attempt to
restart a crashed server and allow the Transaction Recovery Service to
handle incomplete transactions, rather than migrate the Transaction
Recovery Service to another server. However, if you anticipate that the
server will be unavailable for an unacceptable length of time, you can
migrate the Transaction Recovery Service to another service so that the
backup server can complete transaction work for the failed server.

Select the failed
server from which you want to migrate the Transaction Recovery
Service, then select the Control > Migration
tab.

Click
Advanced to show the JTA Migration
options.

Under JTA Migration Options, in
Migrate to Server, select that server to which
you want to migrate the Transaction Recovery Service for the current
server.

The server that you select must have access to the default
persistent store (transaction log files) for the current server. The
selected server will perform the transaction recovery process for
the failed server.

Click
Save.

A request is submitted to migrate the Transaction Recovery
Service and the configuration edit lock is released. If the
migration fails, an error message is displayed.